英文:
Why does `go tool pprof` show addresses instead of function names?
问题
$ go tool pprof pgears.go profilefile.prof
addr2line: crackhdr: 未知的头类型
欢迎使用pprof！要获取帮助，请输入'help'。
(pprof) top
总共：8个样本
5 62.5% 62.5% 5 62.5% 0000000000028a8b
1 12.5% 75.0% 1 12.5% 000000000002295c
1 12.5% 87.5% 1 12.5% 000000000009375a
1 12.5% 100.0% 1 12.5% 00000000000d278a
0 0.0% 100.0% 1 12.5% 000000000000252a
0 0.0% 100.0% 1 12.5% 000000000000259d
0 0.0% 100.0% 2 25.0% 0000000000017d9e
0 0.0% 100.0% 2 25.0% 000000000001a2bf
0 0.0% 100.0% 6 75.0% 000000000001b630
0 0.0% 100.0% 1 12.5% 0000000000045401
(pprof)
为什么go tool pprof显示的是地址而不是函数名？
来源：http://google-perftools.googlecode.com/svn/trunk/doc/cpuprofile.html
或者：http://blog.golang.org/profiling-go-programs
我们知道应该是函数名。
或者我如何将字节信息更改为函数名？
操作系统：Mac OS 10.9.2
Go版本：go1.2 darwin/amd64
英文:
$ go tool pprof pgears.go profilefile.prof
addr2line: crackhdr: unknown header type
Welcome to pprof! For help, type 'help'.
(pprof) top
Total: 8 samples
5 62.5% 62.5% 5 62.5% 0000000000028a8b
1 12.5% 75.0% 1 12.5% 000000000002295c
1 12.5% 87.5% 1 12.5% 000000000009375a
1 12.5% 100.0% 1 12.5% 00000000000d278a
0 0.0% 100.0% 1 12.5% 000000000000252a
0 0.0% 100.0% 1 12.5% 000000000000259d
0 0.0% 100.0% 2 25.0% 0000000000017d9e
0 0.0% 100.0% 2 25.0% 000000000001a2bf
0 0.0% 100.0% 6 75.0% 000000000001b630
0 0.0% 100.0% 1 12.5% 0000000000045401
(pprof)
Why go tool pprof shows addresses instead of function names?
from http://google-perftools.googlecode.com/svn/trunk/doc/cpuprofile.html
or http://blog.golang.org/profiling-go-programs
We know it must be function name.
Or how can I change the byte information to function name?
Operation System: Mac OS 10.9.2
Go Version: go1.2 darwin/amd64
答案1
得分: 7
pprof的第一个参数必须是一个二进制文件，而不是一个源文件。
因此，你需要编译这个二进制文件：
$ go build -o ppears
然后将其作为pprof的输入：
$ go tool pprof pgears
英文:
The first argument to pprof must be a binary, not a source file.
So you must compile the binary:
$ go build -o ppears
and use it as the input to pprof:
$ go tool pprof pgears
答案2
得分: 1
go build -o bin // 构建二进制文件
go tool pprof bin profilefile.prof
英文:
go build -o bin // build the binary file
go tool pprof bin profilefile.prof
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